docs: def examples(manager: Manager):
      """Load examples to the database."""
      for graph in (sialic_acid_graph, statin_graph, homology_graph, braf_graph, egf_graph):
          if manager.has_name_version(graph.name, graph.version):
              click.echo('already inserted {}'.format(graph))
              continue
          click.echo('inserting {}'.format(graph))
          manager.insert_graph(graph, use_tqdm=True)